Finally seeing the end of the tunnel.

Want to adjust the OPV, but unfortunately the PF I built with the gauge , that fits the Anita and Giotto, doesn't fit the group on Junior. The Cimbali PFs don't have a 3/8" fitting for the spout, so can't just transfer the bits over.

Are there other portafilters that will fit the Junior group? The baskets seem to be 57mm instead of 58mm, at least that's what size tamper works. I can get a 58mm blank to fit in the PF, but it is quite tight.

Thanks